{"id":2224002,"url":"http://patchwork.ozlabs.org/api/patches/2224002/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/patch/20260416134838.186098-1-ye.li@nxp.com/","project":{"id":18,"url":"http://patchwork.ozlabs.org/api/projects/18/?format=json","name":"U-Boot","link_name":"uboot","list_id":"u-boot.lists.denx.de","list_email":"u-boot@lists.denx.de","web_url":null,"scm_url":null,"webscm_url":null,"list_archive_url":"","list_archive_url_format":"","commit_url_format":""},"msgid":"<20260416134838.186098-1-ye.li@nxp.com>","list_archive_url":null,"date":"2026-04-16T13:48:38","name":"arm: layerscape: Check zero size memory bank before lmb_add","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"d4a1c0dd5c4235d5b6650bc0d74006514fe7fb05","submitter":{"id":68036,"url":"http://patchwork.ozlabs.org/api/people/68036/?format=json","name":"Ye Li","email":"ye.li@nxp.com"},"delegate":{"id":55230,"url":"http://patchwork.ozlabs.org/api/users/55230/?format=json","username":"freenix","first_name":"Peng","last_name":"Fan","email":"van.freenix@gmail.com"},"mbox":"http://patchwork.ozlabs.org/project/uboot/patch/20260416134838.186098-1-ye.li@nxp.com/mbox/","series":[{"id":500166,"url":"http://patchwork.ozlabs.org/api/series/500166/?format=json","web_url":"http://patchwork.ozlabs.org/project/uboot/list/?series=500166","date":"2026-04-16T13:48:38","name":"arm: layerscape: Check zero size memory bank before lmb_add","version":1,"mbox":"http://patchwork.ozlabs.org/series/500166/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2224002/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2224002/checks/","tags":{},"related":[],"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":["legolas.ozlabs.org;\n\tdkim=pass (2048-bit key;\n unprotected) header.d=nxp.com header.i=@nxp.com header.a=rsa-sha256\n header.s=selector1 header.b=fG15Jxs8;\n\tdkim-atps=neutral","legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; 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CTRY:; LANG:en; SCL:1; SRV:;\n IPV:NLI; SFV:NSPM; H:AS4PR04MB9436.eurprd04.prod.outlook.com; PTR:; CAT:NONE;\n SFS:(13230040)(42112799006)(366016)(376014)(19092799006)(52116014)(1800799024)(38350700014)(18002099003)(56012099003);\n DIR:OUT; SFP:1101;","X-MS-Exchange-AntiSpam-MessageData-ChunkCount":"1","X-MS-Exchange-AntiSpam-MessageData-0":"\n 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","X-OriginatorOrg":"nxp.com","X-MS-Exchange-CrossTenant-Network-Message-Id":"\n d478bb11-b807-463b-a56e-08de9bbe978d","X-MS-Exchange-CrossTenant-AuthSource":"AS4PR04MB9436.eurprd04.prod.outlook.com","X-MS-Exchange-CrossTenant-AuthAs":"Internal","X-MS-Exchange-CrossTenant-OriginalArrivalTime":"16 Apr 2026 13:46:42.4848 (UTC)","X-MS-Exchange-CrossTenant-FromEntityHeader":"Hosted","X-MS-Exchange-CrossTenant-Id":"686ea1d3-bc2b-4c6f-a92c-d99c5c301635","X-MS-Exchange-CrossTenant-MailboxType":"HOSTED","X-MS-Exchange-CrossTenant-UserPrincipalName":"\n YqmgvTD43GxytCFYnPFvlFr1bQfSgcZJrGhWyKtBgM6JqL7IDxiAhYyLOzLNCMfI","X-MS-Exchange-Transport-CrossTenantHeadersStamped":"PAXPR04MB8861","X-BeenThere":"u-boot@lists.denx.de","X-Mailman-Version":"2.1.39","Precedence":"list","List-Id":"U-Boot discussion ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"u-boot-bounces@lists.denx.de","Sender":"\"U-Boot\" ","X-Virus-Scanned":"clamav-milter 0.103.8 at phobos.denx.de","X-Virus-Status":"Clean"},"content":"In layerspace's lmb_arch_add_memory implementation, all memory bank\nare added to lmb, even some is with zero size. This will cause lmb\ntreating it as overlap with available memory by lmb_addrs_overlap\nand merge with available memory. Finally causing available memory\nstart address changed to 0.\n\nFor example, on LX2160, before zero memory bank added to lmb, there\nare two available memory regions:\n - region 0, start 0x80000000, size 0x7be00000\n - region 1, start 0x2080000000, size 0x700000000\nAfter zero size memory bank added, merge to one region:\n - region 0, start 0, size 0x2780000000\nThis wrong new region causes efi_memory_init issue when allocating bounce\nbuffer because of conflict address (with uboot reserved) is allocated.\n\nSigned-off-by: Ye Li \n---\n arch/arm/cpu/armv8/fsl-layerscape/cpu.c | 3 ++-\n 1 file changed, 2 insertions(+), 1 deletion(-)","diff":"diff --git a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c\nindex cfbaa475701..7f0cb28f52d 100644\n--- a/arch/arm/cpu/armv8/fsl-layerscape/cpu.c\n+++ b/arch/arm/cpu/armv8/fsl-layerscape/cpu.c\n@@ -1549,7 +1549,8 @@ void lmb_arch_add_memory(void)\n \t\t gd->arch.resv_ram < ram_start + ram_size)\n \t\t\tram_size = gd->arch.resv_ram - ram_start;\n #endif\n-\t\tlmb_add(ram_start, ram_size);\n+\t\tif (ram_size > 0)\n+\t\t\tlmb_add(ram_start, ram_size);\n \t}\n }\n #endif\n","prefixes":[]}